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title 39
POSTAL SERVICE
part IV
MAIL MATTER
chapter 36
POSTAL RATES, CLASSES, AND SERVICES
subchapter III
PROVISIONS RELATING TO EXPERIMENTAL AND NEW PRODUCTS
Subchapter III. PROVISIONS RELATING TO EXPERIMENTAL AND NEW PRODUCTS
§ 3641
- Market tests of experimental products
§ 3642
- New products and transfers of products between the market-dominant and competitive categories of mail
